Manufacture of conveyer-belting and machine-belting.



PATENTED APR. 28, l90 8.

P. REDDAWAY.

MANUFACTURE OF GONVEYER BELTING AND MACHINE BELTING- APPLIGATION PILED SEPT.27,1907.

ratrrur orrrcn MANUFACTURE OE CQNVE'ZER-BELTING AND MACHINE-BE'LTING.

no. assess.

:Elpecification of Letters Fatent.

Patented April 28, 1908.

Application filed September 27, 1907. Serial No. 394,918.

To all 212 mm it may concern;

Be it known that l, FRAN-K REDDAWAY, a subject of Great Britain, residing at Cheltenham street, Pendleton, Manchester, in the county of Lancaster, England, manufacturer, i

have invented new and useful Improvements in the Manufacture of Conveyer-Belt ing and Machine-Belting, of which the lolsingle twist for weft.

fortified by insertions or layers of cotton canvas duclt.

Prior to niyinvention such cotton canvas has been woven from a warp and weft of single twisted fibers.

It is found in practice that conveyor belts in which such cotton canvas insertions are used are too liable to stretch owing no doubt,

to the elasticity of the fibers from which the,

cotton canvas is woven. l. have devised means to overcome such defect and to this end the essential novel feature of my invention consists in theernployinent of cotton canvas insertions or layers which are woven,

both in Warp and weft, of f cabled yarns or I might use cabled yarns for warp only, and As is Well known cabled yarns are composed of several strands, each'ot such strands being made up of several twisted fibers.

Such cabled yarns have a very slight degree of elasticity as compared with the single twisted ones and consequently the canvas woven therefrom, when used as insertions in the conveyor belt, insures the production of a belt inwhioh the objectionable tendency to stretching is removed, and further increases the'strength oi the belt. The layers of cotton canvas Woven from such cabled'yarns may be of any desired number according to the size and strength of the conveyor belt. Also such layers may be incorporated with the rubber body o1 the belt or made up to form a oonveyerbelt in any usual or suitable manner. i

In a plying any invention in the manutacture 0 driving and other machinery belting The several strands of twisted fibers are then twisted into a cabled yarn.

'1 use any suitable number of cotton canvas layers, woven from cabled yarns as above described. Such layers vary in number and width according to the size and strength of belt required and are cemented or secured together to the requisite thickness in the usual way. The belt may then be finished either with protective coats of paint, or other composition, be covered with an envelop of rubber as desired. 1 thus also produce by means of my invention driving and other machinery belting of increased strength and diminished elasticity or liability to stretch.

The-invention is illustrated in the accompanying drawing in which:

Figure 1 re resents in cross section a rubber conveyer lieltj Fig. 2 is a similar section of driving belting.

In Fig. 1 the body of the belt marked a is of rubber and is fortified by insertions of canvas 6 represented by dotted lines. These canvas insertions, under my invention, are woven wholly or partly of cabled yarns as described above Cabled yarn is prepared as follows: First, a thread is spun; second, several threads are twisted into a strand; and third, several strands are twisted into What is called cablec yarn,

in manufacturing ,1'

driving belting the belt ismagle ot-any as sired'nuinber of cloths of cabled yarn or partly of cabled yarn, the warp-threadsbeing re resented by the dots c and the wealthy T e various cloths are secured together either in the or other suitable means.

declare that What I claim is A belt composed of cotton canvas duck,

woven wholly orpartlj from cabled yarns,

for reducing the tendency of the belt to stretch t Gonvcyer belting composedof cotton canvas duck, woven wholly' or partly from cabled yarns cemented together in layers'and' having a protective surface as rubber-or other composition:

In testimony whereof name to this spccificationlin the presence of two subscribing witnesses.

FRANK REDDAWAY. Witnesses:

F. E. BRADLEY,

WALTER Pnrrnnnrnn,

process of weaving oriby stickl have signed iny' 

